INGREDIENTS
•
5 medium apples, peeled, cored and sliced into 1/8-inch-thick slices (about 4 cups)
•
1/2 cup plus 3 tablespoons lightly packed dark brown sugar
•
2 tablespoons cornstarch
•
1 tablespoon fresh lemon juice
•
2 teaspoons ground cinnamon
•
1/4 cup old-fashioned rolled oats
•
3 tablespoons unsalted butter, melted
•
2 tablespoons all-purpose flour
•
1/4 teaspoon kosher salt
•
One 9-inch piecrust, homemade or store-bought, rolled to an 11- to 12-inch diameter
•
1 egg, lightly beaten
•
1 tablespoon raw (turbinado) sugar